Painfully bored: the role of negative urgency and history of Non-Suicidal Self-Injury in Self-Administering painful stimuli

The current study aims to examine the causal effect of boredom on non-suicidal self-injury (NSSI), expanding prior experimental research by including an anger induction to compare to a boredom induction, and additionally measuring whether participants specifically seek painful stimulation. In a sample of mostly undergraduate students (N = 146), emotional state was manipulated through video induction, and NSSI behavior was simultaneously measured, operationalized through self-administration of electric shocks. Participants’ pain thresholds were measured beforehand. NSSI history and negative urgency were included as potential moderators. Results showed that boredom increased both frequency and intensity of self-administered electric shocks, especially in participants with an NSSI history. Negative urgency was not a significant moderator. No causal anger-NSSI link was found, possibly due to the anger induction not being sufficiently effective. Clinical implications are considered through suggestions of boredom coping skills training as an intervention strategy in NSSI populations.